Need help with physics/algebraic related question

[nimble nacelle]

ok looking at the equation at the t=0 hes 80ft above the water

[dawn lance]

mhm

[nimble nacelle]

means if you set h = 0, you should find out the time it took him

that equation you can solve with the quadratic formula

[dawn lance]

ax^2 + bx + c = 0?

[nimble nacelle]

Yes

[dawn lance]

Hm

[nimble nacelle]

i can try to solve it and write it hidden in this chat if you want to compare

[dawn lance]

wait uh

I'll try to solve it too

But can I post my answer first

[nimble nacelle]

okey that works too

[dawn lance]

Alr brb

[nimble nacelle]

ok gl

[dawn lance]

uhhhhh

[nimble nacelle]

you got something?

[dawn lance]

man Im so lost pls help 😭

-2t^2

Oops

I have no idea where im going

[nimble nacelle]

oh, which formula did you lern the solve equations like ax²+bx+c?

[dawn lance]

wat

[nimble nacelle]

because most people use this one

[dawn lance]

Uh

I dont use that one

I use the ax^2 + bx + c

[dawn lance]

yep

[dawn lance]

What the heck

[nimble nacelle]

ok well thats just the standart form a quadratic equation

[dawn lance]

so what do i do

[nimble nacelle]

i can only explain you this one, ive never learned the other one

[dawn lance]

Thats complicated

never learned that one before

[nimble nacelle]

it isnt trust me

you'll need it

[dawn lance]

I'm in Math II man

Thats what we have here

In cali i guess

[nimble nacelle]

im from germany, we had this in 7th grade or so

[dawn lance]

7th grade????

[nimble nacelle]

ye i think so

[dawn lance]

bruh

[nimble nacelle]

it easy trust me

[dawn lance]

I mean if you say so

[nimble nacelle]

ok first thing, you can always use this formular for equations with ax²+bx+c

not for x³

[dawn lance]

x^3?

nvm keep going

[nimble nacelle]

e.g. if you have a equation looking like this x³+x²+x+1

[dawn lance]

polynomial yes

But I'm trying to factor

[nimble nacelle]

then in your example, you have to remove every number before the x²

means in our case case dividing everything with (-16)

[dawn lance]

What if I'm dividing that with the 8t

[nimble nacelle]

-16x²+8x+80 = 0 | /(-16)

that wont work

[dawn lance]

uh

yeh wont work lol

[nimble nacelle]

so you got x²-(1/2)x-5 = 0

[dawn lance]

where did you get that

[nimble nacelle]

i just divided everything with -16

[dawn lance]

wait

80/-16

[nimble nacelle]

is -5

[dawn lance]

Oh for a second i thought you get a decimal

Anyways

[nimble nacelle]

ok when you got that, you have to use the formula

[dawn lance]

._.

[nimble nacelle]

p stands in this case for the number in front of the x , in our case -1/2

q stands for the number at the end , in our case -5

[dawn lance]

Hold on

t² -1/2t - 5 = 0

Is it possible to solve this using ax^2 + bx + c

[dawn lance]

that looks hard man

[nimble nacelle]

so 1/2 divided by 2 is 1/4

when 1/16 i got from (1/2)/2 = 1/4

if you square this you get 1/16

[dawn lance]

hm

how did you get 9/4

Also what's the +_ mixed together

[nimble nacelle]

because you got a quadratic equation you get 2 solutions

first you use +

means 10/4

second solution - means -8/4 = -2

[dawn lance]

im so confused

[nimble nacelle]

where did you stop

[dawn lance]

from here

[nimble nacelle]

or where did problems appear?

[dawn lance]

honestly i tried to do it the factor way

But i got stuck there

[nimble nacelle]

yes, but with this equation, it will hardly work

[dawn lance]

Can you maybe rewrite the process

I dont mean to judge you for the bad handwriting

Not in a mean way, pls don't take it seriously

[nimble nacelle]

i can, but did you try doing it by yourself yet?

thats the best way to lern it

[dawn lance]

Factor way is the only way I know

:/

[nimble nacelle]

just strictly follow the formula

[dawn lance]

hmm

what's "p" again

[nimble nacelle]

the number before the x

[dawn lance]

I'm confused on how you put the 1/2 over the p/2

1/2/2???

Or you could use decimal like 0.5/2

[nimble nacelle]

sure, but its hard to calculate 0,25*0,25

[dawn lance]

that's where it gets confusing

[nimble nacelle]

but you could also just multiply the denominators

means 1/2 / 2 = 1/4

https://www.youtube.com/watch?v=IlNAJl36-10

unfortunately i have to go to bed now im sorry

[dawn lance]

That's fine

[nimble nacelle]

you can mabye watch this video

[dawn lance]

Thx for the help

[nimble nacelle]

they will explain you the other formula

[dawn lance]

I'll check it out

[nimble nacelle]

do you need the solution?

[dawn lance]

the solution?

[nimble nacelle]

for the question

[dawn lance]

Yeh why not

[nimble nacelle]

solution -> ||10/4 or 2,5||

a negative time doesnt make send so that the only reasonable one

good night

[dawn lance]

good night

[dawn lance]

anyone theree

<@&286206848099549185>

[nimble nacelle]

?

[dawn lance]

hey you back

what time is there in germany

[nimble nacelle]

20:14

or 8:14 pm

[dawn lance]

I thought you went sleep

[nimble nacelle]

that was hours ago

[dawn lance]

bruh i was asleep

im in class rn

math to be exact

[dawn lance]

help

[nimble nacelle]

what, yo pay attention in class

your teacher can explain much better than i can

[dawn lance]

no

my teacher likes zelda

Marcel you there

He doesn't explain what to factor out of numbers

Help

[nimble nacelle]

why dont you ask him?

your teacher gets paid to explain it to you

[dawn lance]

im scared

helpme bro

[dawn lance]

pls

im desperate

[dawn lance]

@nimble nacelle

[dawn lance]

@nimble nacelle still there? class is over

[nimble nacelle]

yes

[dawn lance]

How do i find numbers that factor that number

[nimble nacelle]

what equation again?

[dawn lance]

@nimble nacelle

hey man i need help

pls

[nimble nacelle]

didnt you watch the video i send you yesterday?

[light glade]

why are you scared..?

you are meant to ask him questions

and he has to answer them

[dawn lance]

yes

[nimble nacelle]

so you should be able to solve the problem now

[dawn lance]

Very straightfoward

i'm done here

.solved

[spice plaza]

Solved

Post marked as solved by @dawn lance.

Use .unsolved if this was a mistake.